JPS61157356A - Dehulling apparatus of huller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a husking device for a hulling machine, and is intended to automatically maintain a constant husking state in a husking roll.

Problems to be Solved by the Invention In the hulling device of a rice huller, when controlling the hulling rate to maintain a constant hulling rate, it is necessary to set a hulling rate reference value that should be used as a standard for the hulling rate control. However, it is necessary that the paddy judgment standard of the phus removal rate sensor that measures the phus removal rate to be compared with this reference value is constant, but the paddy that should be removed depends on the type of paddy itself, the degree of dryness, etc. The color to be judged by the rate sensor,
When the judgment conditions such as brightness change, the judgment criteria of this sensor must also match the rice, and the adjustment operation for this is troublesome.

Means for Solving the Problems This invention detects the state of shedding by the shedding roll (1) with a shedding rate sensor (2), and adjusts the shedding roll to keep the shedding rate constant. (1) The paddy supply funnel (5) to be supplied to the phus-pulling roll (1) is supplied to the phus ratio control system (4) that adjusts the gap (3) between the phus.

The shutter (6) closes or this paddy supply funnel (5)
When restarting the hulling after the hull becomes empty, a reference measuring circuit (7) is used to control the hulling ratio by measuring the paddy judgment standard that should be used as the hulling ratio control standard of the hulling ratio sensor (2).
), and during the measurement of the paddy judgment standard, the gap (3) between the dehulling rolls (1) and
) is provided with a load current control circuit (8) for adjusting the hulling machine.

Functions and Effects of the Invention In the dehulling roll (1) of the hulling machine, the paddy supplied to the paddy supply funnel (5) is fed down by the opening of the paddy supply shutter (6), and is fed to the paddy in the gap (3). It is subjected to the dehulling action, and some of this dehulled rice is detected by the dehulling rate sensor (2).
detecting the shedding rate by comparing the detected shedding rate with a preset shedding rate reference value, and adjusting the gap (3) of the shedding roll (1); This is to control the hulling rate so that it always follows the set standard value, and during this control action, if there is no paddy in the paddy supply funnel (5) or the supply shutter (6) is closed. When this happens, the paddy is supplied to the paddy supply funnel (5) again and the supply shutter (6) is opened.As soon as the dehulling action starts, the dehulling rate sensor (2) and the reference measurement circuit (7) are activated. ), a new paddy judgment standard is set, and after this newly set paddy judgment standard, the difference between the paddy removal rate standard value and the already set paddy judgment standard is measured. In comparison,
The shedding rate control is started, and at this time, while the shedding rate sensor (2) is in the process of determining the criterion, the load current control circuit (8) controls the shedding of the shedding roll (1). The load current is detected and compared with a load current value serving as a predetermined reference, and the gap (3) of the de-pulping roll (1) is automatically adjusted.

In this way, the paddy judgment criteria by the pulp removal rate sensor (2) are as follows:
Paddy supply funnel (5) to the dehulling roll (1)! 1. Judgment is automatically redone depending on the situation where there is a high possibility that new paddy will be supplied to the paddy supply funnel (5), such as when there is no more paddy in the paddy supply funnel (6) or when the paddy supply shutter (6) is closed and closed. Since it is carried out periodically, the skimming rate control is carried out continuously, without extremely large disturbances during the process, and is efficient.

Embodiment In the illustrated example, the hulling machine includes a hulling device consisting of a hulling roll (1), a hull supply funnel (5), a hulling ratio control system (4), etc. The wind sorting device (9) is mainly composed of a wind sorting device (9) that receives the pressed rice and sorts it by wind, and a sorting device (10) that receives the washed rice and sorts it into paddy and brown rice. A suction dust extractor (11) is installed in series. '
(12) is a grain lifting device for receiving the washed rice and frying it to the sorting device (10), and (13) returns the paddy sorted by the sorting device (IO) to the paddy supply funnel (5). (14) is a grain lifting machine for taking out the selected brown rice.

The paddy supply funnel (5) is provided with a paddy detection sensor (15) for detecting the presence or absence of paddy in the funnel. The left and right pair of plowing rolls (1) (1) are configured so that the roll gap (3) can be adjusted under the control of the plowing rate control system (4). A paddy supply shutter (6) is arranged between the dehulling roll (1) and the upper paddy supply funnel (5) and can be opened and closed by a lever (17). In addition, the husking rate sensor (2) is located in the X selection device (9) below the husking device, receives a part of the husked rice, detects and distinguishes between paddy and brown rice, and determines the amount of husked rice. This is a configuration that allows you to find the ratio of the amount of brown rice to the amount of brown rice.

The shedding rate control system (4) detects and measures the shedding rate by the shedding rate sensor (2), and determines whether the detected shedding rate is selected or set in advance by the reference value setting circuit (18). By comparing the ratio reference value and the comparison circuit (18), the control motor (20) is linked and the pleasurable roll (1) is moved! 1Rf
rIl, adjust the gap (3) and remove the scraping rate sensor (2).
The control is interlocked to maintain the shedding rate detected by the system in accordance with the reference value. This adjustment of the pulp removal rate can be done by increasing the gap (3) between the plastic removal rolls (1) to reduce the plastic removal rate.
Conversely, if the gap (3) is made smaller, the shedding rate can be increased. For this gift, ζ rate control is the gift roll (1)
The structure is such that the load can be detected and the process can also be performed using this load current, and the reference value setting circuit (18) is configured to electrically drive the shredding roll (1) corresponding to the set shredding ratio reference value. The configuration is such that the motor load current value can also be set as a reference value at the same time. A load current detection circuit (21) for detecting the load current value of driving the plow roll (1) is provided in the power supply circuit of the motor for driving the plow rotation of the plow roll (1). A load current control circuit that can adjust and control the gap (3) while comparing a load current detected value by the current detection circuit (21) with a load current reference value by the reference value setting circuit (18) in a comparison circuit (22). 8).

The supply shutter (6) is closed or the paddy detection sensor (15) detects that there is no paddy in the paddy supply funnel (5), and then the shutter (6) is opened and the paddy detection sensor (15) is opened. 15) detects paddy, it switches the dehulling rate control from the control circuit using the dehulling rate sensor (2) to the load current detection circuit (21), and also switches the dehulling rate control to the load current detection circuit (21).
) is configured to operate the reference measurement circuit (7) for detection and determination. The husking rate sensor (2) is composed of a photo sensor, and is used to distinguish between paddy and brown rice from the husked rice by the color of their surfaces. This reference measurement circuit (7) receives signals from the paddy supply shutter (6) and the paddy detection sensor (15), and performs sampling of the removed rice several times by the hulling rate sensor (2), and each During sampling, the maximum voltage value of a certain number of grains is measured, the average value of these values is determined, and those under certain conditions are measured using this scraping rate sensor (
2) is set as the judgment standard for paddy, and is used to detect and judge whether paddy is different from brown rice. Upon completion of the measurement action by the reference measurement circuit (7), the control by the load current detection circuit (21) is switched back to the control by the shedding rate sensor (2) as described above.
In one hulling operation, a part of the hulled rice that is hulled by the hulling roll (1) is sampled at predetermined time intervals by a hulling rate sensor (2) to measure the hulling rate. The comparison circuit (18) compares this shedding rate with the standard value of the shedding rate preset by the reference value setting circuit (18), and the control motor (
20) adjusts the gap (3) and maintains the plowing rate in accordance with the plowing rate reference value.

The shutter (6) is closed during the hulling work or at the end of the work.
is closed, or once the paddy in the supply funnel (5) runs out and the paddy detection sensor (15) detects that there is no paddy, and the shutter (6) is opened again to supply paddy. When the paddy detection sensor (15) detects paddy, the reference measurement circuit (7) is activated and measures the voltage of a predetermined number of grains from the sampled polished rice. This is repeated several times, averaged, and multiplied by the paddy determination coefficient to obtain a certain voltage value, which is used as the paddy determination standard value of this pulp removal rate sensor (2). Set. While the reference measurement circuit (7) is performing the measurement operation, the load current detection circuit (21) is switched to the load current detection circuit (21).
Based on the detection of the load 'i1i flow, the comparison circuit (22) compares it with a preset shedding ratio reference value, and the gap (3) is controlled by the control motor (20).

In this way, when the judgment reference value of the reference measurement circuit (7) is set, the control is switched to the plowing rate by the plowing rate sensor (2), and the plowing rate is then detected by the plowing rate sensor (2). The shedding rate is compared with the preset shedding rate reference value in a comparison circuit (18), and the gap (3) is controlled by a control motor (20). This sharpening rate sensor (2)
This paddy judgment standard is used for detection of paddy by
7), the paddy supply funnel (
5) can be applied to the determination of newly supplied paddy, so that the hulling ratio sensor (2) can properly detect and measure the hulling ratio.

Note that the reference δt++ constant circuit (7) is
), for example, may be configured to detect paddy in a paddy supply funnel (5) and obtain a paddy judgment reference value from this supply status, and furthermore, this may also be used as the paddy sensor (15). You may let them.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a control block circuit diagram and Fig. 2 is a side view.
1) is the husking roll, (2) is the husking rate sensor, (3) is the gap, (4) is the husking control system, (5) is the paddy supply funnel, (6)
indicates a paddy supply shutter, (7) a reference measurement circuit, and (8) a load current control circuit.

Claims (1)

[Claims] A shedding rate sensor (2) detects the shedding state of the shedding by the shedding roll (1), and adjusts the gap (3) between the shedding rolls (1) to keep the shedding rate constant. The phulling rate control system (4) indicates whether the paddy supply shutter (6) of the paddy supplying funnel (5) to be supplied to the phushulling roll (1) is closed or this paddy supplying funnel (5) is in an empty state. At the time of resuming the husking after the husking has occurred, a standard measuring circuit (7) is provided to control the husking rate by measuring a paddy judgment standard that should be used as the husking rate control standard of the husking rate sensor (2). , during the measurement of the paddy judgment criteria, the dehulling device of the hulling machine is provided with a load current control circuit (8) that adjusts the gap (3) between the dehulling rolls (1) according to the load current of the dehulling rolls (1). .